<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>表格标签</title>
</head>
<body>
<table border="1" cellspacing="0">
  <caption>表格标题</caption>
  <tr>
    <th>表头1</th>
    <th>表头2</th>
    <th>表头3</th>
    <th>表头4</th>
  </tr>
  <tr>
    <td colspan="2" align="center">1-1</td>
<!--    <td>1-2</td>-->
    <td rowspan="2">1-3</td>
    <td rowspan="3">1-4</td>
  </tr>
  <tr>
    <td>2-1</td>
    <td>2-2</td>
<!--    <td>2-3</td>-->
<!--    <td>2-4</td>-->
  </tr>
  <tr>
    <td colspan="3">3-1</td>
<!--    <td>3-2</td>-->
<!--    <td>3-3</td>-->
<!--    <td>3-4</td>-->
  </tr>
</table>
</body>
</html>